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IMAGE
Convert XLSM to ICB
Convert XLSM to ICB online for free with no sign up, with quality-focused workflow guidance.
XLSM at a glance
XLSM
As with DOCM, XLSM reflects the OOXML-era decision to distinguish macro-enabled files from ordinary editable files more visibly.
ICB at a glance
ICB
The Truevision line grew out of EPICenter-era PC graphics boards, and several board names ended up surviving as filename extensions even when the underlying raster structure stayed close to the wider TGA family.
Format comparison
| Feature | XLSM | ICB |
|---|---|---|
| File type | Spreadsheet | Image |
| Extensions |
|
|
| MIME type |
|
|
| Compression / quality | structured | depends |
| File size characteristics | small | medium |
| Compatibility | moderate | broad |
| Editability | high | moderate |
| Created year | 2007 | 1991 |
| Inventor | Microsoft | Truevision |
| Status | active | active |
| Primary use cases |
|
|
| Common software |
|
|
| Archival suitability | moderate | moderate |
| Metadata handling | rich | moderate |
| Delivery profile | moderate | strong |
| Workflow fit | analysis | delivery |
| Vector scaling | Not supported | Not supported |
When to use each format
When to use XLSM
- analysis
- reporting
- business-data exchange
- Supports powerful Excel automation and business logic.
When to use ICB
- capture ingest
- editing
- web or print delivery
- Important for long-tail compatibility with historic Truevision-era assets.
FAQs
Why convert XLSM to ICB?
Choose ICB as target when recovering historical raster assets from Truevision-era systems or normalizing old image archives before moving them into PNG, TIFF, or another contemporary format.
What changes when converting XLSM to ICB?
Convert to ICB when recovering historical raster assets from Truevision-era systems or normalizing old image archives before moving them into PNG, TIFF, or another contemporary format. It is mainly a compatibility target for legacy graphics collections.
What should I review after converting XLSM to ICB?
After conversion, review these destination checks: Open converted output in ImageMagick and verify behavior on real samples; Compare output against the expected depends quality profile; Weak modern software recognition compared with ordinary.tga files.
How can I keep quality stable in XLSM to ICB conversion?
Run representative samples, keep settings deterministic, and monitor these risks: Public documentation is mostly historical or secondary; Weak modern software recognition compared with ordinary.tga files; Validate destination compatibility before large-batch conversion.